FaceTimeとWhatsAppの比較

プラットフォーム

FaceTimeはiOS, macOS, iPadOSで利用できます。WhatsAppはiOS, Android, Web, Windows, macOSで利用できます。この点で決まる比較は、実際より多くあります。どれほど優れたサービスでも、手元の端末で利用できなければ候補にはなりません。また、代わりに1時間スマートフォンを耳に当て続けることになるなら、デスクトップ用クライアントの有無は見た目以上に重要です。

FaceTimeの公開情報に基づく内容

• none from Apple; cellular minutes may be consumed when relaying normal phone calls through iPhone.
• FaceTime does not use prepaid calling credit; usage relies on Wi‑Fi or cellular data and, when relaying, on iPhone cellular voice plans.

WhatsAppの公開情報に基づく内容

• none
• No calling credit is used for consumer WhatsApp; usage depends on internet connectivity provided by the user’s operator or Wi‑Fi.

FaceTimeの公開情報に基づく内容

Users must sign in with an Apple ID on a supported iPhone, iPad, iPod touch, or Mac to place and receive FaceTime calls.

WhatsAppの公開情報に基づく内容

Registration requires a mobile phone number for SMS or call verification; the number serves as the primary account identifier.

FaceTimeの公開情報に基づく内容

No separate subscription for FaceTime; usage is covered by device purchase and internet or cellular plans.

WhatsAppの公開情報に基づく内容

Consumer app has no in‑app subscription for calling; WhatsApp Business is also free to download, with business API usage billed separately by Meta partners.

FaceTime

FaceTimeは自社アプリ以外では国別の料金を公開していません。

記録された情報源：Apple FaceTime support documentation (no PSTN tariff tables; calls use data or carrier voice minutes when relaying).

WhatsApp

WhatsAppは自社アプリ以外では国別の料金を公開していません。

記録された情報源：WhatsApp consumer apps do not provide paid PSTN calling; calls are app‑to‑app over data.

FaceTime

• Provides one‑to‑one and group video and audio calls between Apple devices.
• Integrated into iOS, iPadOS, and macOS with deep Contacts and Phone app integration.
• Supports Group FaceTime calls with up to 32 participants on compatible OS versions.
• Uses Apple ID and device‑based accounts; no separate username system is required.
• Supports additional features such as screen sharing, SharePlay, Live Captions, and Live Translation on recent OS versions.
• Can relay regular cellular phone calls from a paired iPhone to a Mac or iPad via Continuity, using the carrier’s minutes.
• End‑to‑end encryption is applied to FaceTime calls according to Apple’s platform security descriptions.
• Preinstalled on supported Apple hardware; no separate download is required on iOS devices.

WhatsApp

• Provides end‑to‑end‑encrypted messaging and voice/video calls between WhatsApp users.
• Supports group chats and group voice/video calls (up to 32 participants on mobile as per recent app descriptions).
• Available on mobile apps, WhatsApp Web, and desktop clients, with chats synced across devices.
• Uses phone numbers as identifiers, eliminating separate usernames.
• Offers free international messaging and calls over data without per‑minute charges from WhatsApp itself.
• Owned and operated by Meta Platforms, Inc.
• WhatsApp Business app adds business‑oriented messaging tools while using the same underlying calling and messaging infrastructure.
• As of 2020 it had more than 2 billion active users worldwide, and remains one of the most widely used messaging apps globally.

FaceTime

• FaceTime is limited to the Apple ecosystem, requiring an Apple device or supported browser link for participation, which some users see as restrictive.
• User reviews in various App Store regions mention battery drain and device heating during long or group video calls.
• Some users report occasional call drops or quality degradation on weaker Wi‑Fi or cellular connections.

WhatsApp

• Some reviewers express concerns about metadata and data sharing with parent company Meta, despite message content being end‑to‑end encrypted.
• Enterprise and privacy‑focused reviewers sometimes criticise limited multi‑device independence, as a phone number and device are still central to account setup for most users.
• Crowded chats and high message volume can make long‑term conversation management difficult according to user reviews on app‑analysis sites.